Of different degrees of



'I (No Model.)

l O. B. PECK. MACHINERY POR CENTRIEUGALLY- TREATING PARTICLES '0FMETALLIC 0R MINERAL BEARING SUBSTANCES 0F DIFFERENT DEGREES CI ISPECIFIC GRAVITY.

No 444,617. Patented Jan. 13,1891.

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UNITED STTES PATENT Price,l

ORRIN B. PECK, OF CHICAGO, ILLINOIS, ASSIGNOR TO MELINDA PECK, OF

SAME PLACE.

MACHINERY FOR CENTRIFUGALLY TREATING PARTICLES OF METALLIC ORMINERAL-BEARING SUBSTANCES OF DIFFERENT DEGREES 0F SPECIFIC GRAVITY.

SPECIFICATION forming part of Letters Patent No. 444,61*?, dated January13, 1891.

Application filed May 23, 1890. Serial No. 352,910. (No model.)

T0 @ZZ whom it may concern:

Be it known that I, ORRIN B. PECK, a citizen of the United States,residing at Chicago, Illinois, have invented certain new and usefulImprovements in Machinery for Centrifugally Treating Particles ofMetallic orMineral-Bearing Substances of Different Degrees of SpecificGravity, of which the following is a specification.

The object of my invention is to provide means for agitating orthoroughly mixing the particles of material introduced into therevoluble vessel for treatment while the same is being introduced; andmy invention consists in the features and details of constructionhereinafter described and claimed.

In the drawings, Figure l shows a side elevation,pa1tly in section, ofmyimproved mechanism; and Fig. 2 shows aplan view taken in the line 2 ofFig. 1, looking in the direction of the arrows.

In treating fine or powdery particles of metallic or mineral-bearingsubstances by the action of centrifugal force it is usually desirable tointroduce a certain quantity of water with them to assist in theirseparation. The finer or more powdery particles of the material areliable to Iioat and are difficult to thoroughly mix with water withoutsome mechanical means for stirring and mixing them together.

In making my improved machinery, after providing a suitable revolublevessel A, mounted on and rotated by a shaft B by any convenient andsuflcient motive power, I have provided a spout or casing C, supportedand extending down into the revoluble vessel round the shaft B. Thiscasing of course is held in a stationary or non-revoluble position. Itis preferably provided with inwardly-extending flanges c at suitableintervals apart throughout a portion or the whole of its length. Theseianges are also preferably provided with holes, as shown in Fig. 2, toassist in the more thorough agitation and mixing of the materialstreated. The shaft B throughout the portion inclosed by the casing C isprovided with a sleeve D, which is keyed or otherwise fastened toit soas to rotate with it. This sleeve, which may also be termed a stirrer,7agitatorj or mixer, is provided with a number of outwardly-extendin gpins or projections d, which extend out toward the edge of thecasiugbetwecn the lian ges c. As the shaft, with the revoluble vessel,is rotated the pins d move around in the space between the anges c ofthe casing. As the matter to be treated is introduced into the revolvingvessel it is poured or otherwise run into the same, together with asufficient quantity of Water, and passes down through the spout orcasing C. As the particles of material and water enter the casing theyow from the edges of the Iianges next to the revoluble sleeve. They arethen struck by the revolving pins and carried around in the spacebetween the flanges c until they pass over the next lower and succeedingflange, when they are again struck and beat by the revolving pins in thespace into which they have entered. In this way they successively passover the various flanges c in the casing and are operated upon by thepins in the spaces between them. By the time they reach the bottom ofthe casing and are discharged into the receiving-vessel A they arethoroughly mixed and intermingled with the wa ter that has beenintroduced with them, and are ready to be operated upon by thecentrifugal action developed by the rotation of the vessel.

Y What I regard as new, and desire to secure by Letters Patent, is-

l. In machinery for centrifugally treating particles of metallic ormineral-bearing substances of different degrees of specific gravity, thecombination of a revoluble vessel, a revoluble shaft rotating it as itrevolves, a non-revoluble spout or casing through which the material tobe treated is introduced, and a stirrer, agitator, or mixer within thespout or casing and revolving therein to agitate or mix the materialbeing introduced, substantially as described.

2. In machinery for centrifugally treating particles of metallic ormineral-bearing substances of different degrees of specific gravity, thecombination of a revoluble vessel, a

revoiubie shaft extending through the vessel or casing andrevoivingtherein t-o agitare or :ind rotating it as it revolves, :inona'evolu mix the umteriai being introduced, Substanblc spout or casingsurrounding the shaft and Liaily :is described.

provided with projecting fianges and through ORRIN B. PECK. which thematerial to be treated is introduced, Xiitnesses:

and a sleeve provided with projecting pins GEORGE S. PAYSON, surroundingthe shaft and within the spout i Tiros. A. BANNING.

